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The attachment site, invasion route and larval development of Trochopus pini, a monogenean from the gills of Trigla hirundo

Published online by Cambridge University Press:  06 April 2009

G. C. Kearn
G. C. Kearn
Affiliation:
School of Biological Sciences, University of East Anglia, Norwich, England
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Extract

Adult specimens of Trochopus pini attach themselves by folding the disk-shaped haptor around the edge of the host's primary gill lamella. They are able to move from one place to another with the aid of disk-shaped pads on the head region.Ducts from the posterior median gland cells, which are extensive in the head region of the adult, open on the periphery of each disk and exude an adhesive secretion.

The oncomiracidium of T. pini is described and evidence is offered in support of direct invasion of the gills by these free-swimming larvae. Special attention is paid to the development of the head region of the parasite. Newly attached larvae lose their eye lenses and possibly their anterior median gland cells; their lateral head glands are well developed and most probably serve for attachment of the head region, since the posterior median gland cells are poorly developed and appear to have no ducts. Later the posterior median gland cells and their ducts increase in numbers and, in association with the pads on the head region, take over from the lateral glands the job of attaching the head region.

The paths of the tendons associated with the accessory sclerites on the haptor of T. pini indicate that this gill parasite has evolved relatively recently from the ancestors of benedeniid skin parasites.

I am most grateful to Commander J. Pareira, the Director of the Aquario Vasco da Gama in Lisbon where most of this work was done, and to the Staff of the Aquario and especially to Mr A. Ferreira. I am indebted to the Calouste Gulbenkian Foundation for a generous grant which made this visit possible. I am grateful also to the Directors and Staff of the Laboratoire Arago, Banyuls, France, the Station Biologique of the University of Bordeaux at Arcachon in France, and the Laboratory of the Marine Biological Association of the United Kingdom at Plymouth, England. I would like to thank the Royal Society for a grant from the Browne Fund which enabled me to work at Banyuls in 1962 and for a Pergamon Travel Award which made it possible to visit Arcachon in 1967.

Type
Research Article
Information
Parasitology , Volume 63 , Issue 3 , December 1971 , pp. 513 - 525
Copyright
Copyright © Cambridge University Press 1971

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References

Beneden, P. J. van & Hesse, C. E. (1864). Recherches sur les Bdellodes (Hirudinées) et les Trématodes marins. Mémoires de l'Academie Boyale des Sciences, des lettres et des beaux-arts de Belgique 34, 1–142.Google Scholar
Bychowsky, B. E. (1957). Monogenetic Trematodes, their Classification and Phylogeny. Moscow: Leningrad. Academy of Sciences, U.S.S.R. (in Russian); English translation by Hargis, W. J. and Oustinoff, P. C. (1961). Washington: American Institute of Biological Sciences.Google Scholar
Diesing, C. M. (1838). Monographic du genre Tristoma. Annales des sciences naturelles, (b) Zoologie 9, 77–89.Google Scholar
Dollfus, R. Ph. & Euzet, L. (1964). Complément à la description de Pseudobenedenia nototheniae T. H. Johnston, 1931 (Trematoda Monogenea) parasite d'un téléostéen du genre Notothenia Richardson des Kerguelen. Bulletin du Muséum National d'Histoire Naturelle 36, 849–57.Google Scholar
Euzet, L. (1957). Recherches sur les Monogenoidea parasites de poissons marins. Annales de Parasitologie humaine et comparée 32, 469–81.Google Scholar
Folda, F. (1928). Megalocotyle marginata, a new genus of ectoparasitic trematodes from the rock fish. Publications of the Puget Sound Biological Station 6, 195–206.Google Scholar
Jahn, T. L. & Kuhn, L. R. (1932). The life-history of Epibdella melleni MacCallum 1927, a monogenetic trematode parasitic on marine fishes. Biological Bulletin, Wood's Hole 62, 89–111.CrossRefGoogle Scholar
Kearn, G. C. (1963 a). The egg, oncomiracidium and larval development of Entobdella soleae, a monogenean skin parasite of the common sole. Parasitology 53, 435–47.CrossRefGoogle Scholar
Kearn, G. C. (1963 b). Feeding in some monogenean skin parasites: Entobdella soleae on Solea solea and Acanthocotyle sp. on Raia clavata. Journal of the Marine Biological Association of the United Kingdom 43, 749–66.CrossRefGoogle Scholar
Kearn, G. C. (1964). The attachment of the monogenean Entobdella soleae to the skin of the common sole. Parasitology 54, 327–35.CrossRefGoogle Scholar
Kearn, G. C. (1967). Experiments on host-finding and host-specificity in the monogenean skin parasite Entobdella soleae. Parasitology 57, 585–605.CrossRefGoogle Scholar
Kearn, G. C. (1968). The development of the adhesive organs of some diplectanid, tetraonchid and dactylogyrid gill parasites (Monogenea). Parasitology 58, 149–63.CrossRefGoogle ScholarPubMed
Kearn, G. C. (1970 a). The oncomiracidia of the monocotylid monogeneans Dictyocotyle coeliaca and Calicotyle kroyeri. Parasitology 61, 153–60.CrossRefGoogle Scholar
Kearn, G. C. (1970 b). The production, transfer and assimilation of spermatophores by Entobdella soleae, a monogenean skin parasite of the common sole. Parasitology 60, 301–11.CrossRefGoogle ScholarPubMed
Kearn, G. C. (1971). The physiology and behaviour of the monogenean skin parasite Entobdella soleae in relation to its host (Solea solea). In ‘Ecology and Physiology of Parasites: A Symposium’. Ed. Fallis, A. M., University of Toronto.Google Scholar
Little, P. A. (1929). Trochopus gaillimhe n.sp., an ectoparasitic trematode of Trigla hirundo or Trigla lucerna. Parasitology 21, 107–19.CrossRefGoogle Scholar
Llewellyn, J. (1954). Observations on the food and the gut pigment of the Polyopistho-cotylea (Trematoda: Monogenea). Parasitology 44, 428–37.CrossRefGoogle ScholarPubMed
Llewellyn, J. (1956). The host-specificity, micro-ecology, adhesive attitudes, and comparative morphology of some trematode gill parasites. Journal of the Marine Biological Association of the United Kingdom 35, 113–27.CrossRefGoogle Scholar
Massa, D. (1903). Contribute allo studio del genere Trochopus. Monitore Zooligico Italiano. 14, 252–255.Google Scholar
Massa, D. (1906). Materiali per una revisione del genere Trochopus. Archivio Zoologico Italiano 3, 43–71.Google Scholar
Mola, P. (1912). Die Parasiten des Cottus gobio Linn. Centralblatt für Bakteriologie, Parasitenkunde und Infektionskrankheiten, 1 Abt. 65, 491–504.Google Scholar
Palombi, A. (1949). I Trematodi d'Italia. Parte I. Trematodi monogenetici. Archivio Zoologico Italiano 34, 203–401.Google Scholar
Sproston, N. G. (1946). A synopsis of the monogenetic trematodes. Transactions of the Zoological Society of London 25, 185–600.CrossRefGoogle Scholar
Wiskin, M. (1970). The oncomiracidium and post-oncomiracidial development of the hexa-bothriid monogenean Rajonchocotyle emarginata. Parasitology 60, 457–79.CrossRefGoogle Scholar